Lock



Patented Mar'. 24, 1925.

UNITED STATES PATENT OFFEE.

RQBERT H. BUTTERS AND RICHARD W. STARKE, OF ATLANTA, GEOGIA.

' Loox.

` Application filed August 15, 1921.

inventedy certain new' and useful lmprovey ments in Locks, of which the following is a specication.

This application is led as a continuation,

in so far as any yfeatures of common patentable novelty are concerned, of our pending application, Serial No. 431,273, iledDeeember 16, 1920.

This-invention relates to improvements in locks and more particularly to a lock of the general nature of a padlock, that is to say wherein the locking block is arranged eX- ternally oit the object to be secured.

The principal objects of the invention are to provide a lock which can be easily and quickly applied and removed, which will secure the object or objects to be locked with rigidity', which cannot be tampered with nor removed except by the use of the proper key or other authorized manipulation, which will be strong and not liable to derangement, and which may be economically produced.

W'ith the above objects in view the invention is directed tothe combination of a stem and a locking block to be fitted on the stem a nd locked against endwise movement thereon and the invention consists particularly in novel structural features of the block, adapting it for cooperation with the stem and which will be pointed out in detail as the description proceeds.

The invention is shown in the accompanying drawing as an clement of an organiza- 'tion for locking a tire to its mounting but it will be understood that the invention mayI be used as a device ot general utility and that the particular useful application disclosed is selected merely as an example.

ln said drawing:

Figure 1 is a perspective view showing a segment of a telly and tire and thelocking block in operative position on the valve stem.

Figure 2 is a cross section, the locking block being shown on the line 2-2 of Figure 5.

Figure 3 block.

Figure 4 is a perspective view of the keeper art of the locking block.

igure 5 is a horizontal section of the is an elevation of the locking Serial No. 492,584.

locking block in which the lock mechanism is shown in plan.

Figure 6 is a bottom plan view thereof. Figure 7 is a cross section similar to Fig ure 2 but showing a modified construction. Figure 8 is a plan view of the keeper part yoi! the modified construction. n

The lock comprises .a stem A and a locking block B in cooperation with said stem. As sed for the purpose of locking a tire to its mounting the stem A may be constituted by the valve stem which is provided at its inner end with a head l for cooperation with a nut 2 by means of which the stem is secured to the inner casing 3. Externally of the in- 11er casing the stem carries a spreader a which is confined between the nut 2 and a washer 5 and which presses from within against the marginal beads of the outer casing 6 and holds them engaged in the flanges 7 of the rim 8. The stem proiects through openings in the rim 8 and telly 9 and the block B is secured to the projecting portion of the stem.

The block B comprises two co-axial parts 10 and 11 which, according to the invention, are provided with central openings to take over the stemA and have relative turning movement. ln the construction preferred these parts are connected together whereby the block is a unitary device. For these purposes the part 11 has a rotatable tit within a recess 12 formed in the under face of the part 10 and providing a flange 13 which en-v closes and pievents'access to said part 10; the parts thus related are connected together by a keyl 14e which is carried by the flange 13 and engages in a circumferential groove 15 of the part 10, thereby tov permit said parts to be turned relatively to one another.

The projecting portion of the stem is provided with corrugations 16 preferably interruptedby flat sides 1'? and, as shown in Figures 1 to 6, the block is 4formed to engage said corrugations and flat sides whereby it will be held against yendwise and turning movement on the stem. ln the construction disclosed the corrugations may be consti- Atuted by the usual threads of the valve stein which threads are continued to the outer end of the stem to provide for the attachment ci the usual dust cap C. The relative turning" movement of the parts 10 and 11 is effective to complete the engagement of the block with the stem and also to bring said parts iso wherein the stem is engaged by said one part against endwise movement, and loclr mechanism carried by one part and operative to retract the bolt.

2. locking block for r1-operation with a stein comjn ing two co-airial cooperating parte, relatively rotatable and having cen trai openings through which the stem projects, one or' the parts and the stem being formed mutually to engage against relativev turning movement, the other part andthe stem being formed mutually to engage against relative endwise movement, Aa locking bolt tor connecting said parts against relative rotation in the reiative posltions thereof wherein they engage the stein against turning and endwiso movement respectively', and loch mechanism carried bygone part and operative to retractl the bolt.

3. A locking block for co-operation with,

a stem comprising two co-azial co-operating parte relatively rotatable and having centrai openings through which the stem projects, one of the parts being non-rotatable with respect to thestem, the-other part and fi. A. unitary locking bloclr 'for co-opera-` tion with a stem comprising two coaxial cooperating parts permanently connected together iior relative rotation and having central openings through which the stem projects, one of the parte being .non-rotatable with respect to the stem, the other part and the stem being formed mutually to engage against relative endwise movement, a locking bolt for connecting said parts against relative rotation in the relative positions thereof wherein the stem is engaged 'by said one part against endwise movement, and lock mechanism carried by one part andoperative to retract the bolt.

5. A unitary locking block for co-operation with a stem comprising two co-axial cooperating parts relatively rotatable and hast ing central openings through which the stem. projects, one of the parts being nonrotatable with respect to the stem, the other part and the stom being formediniutnally to engage against relative endwise movement, a locking bolt for connecting said parte against relative rotation in the relative. positions thereof wherein the stem engaged loch mechanism carried by one part and operative to retract the bolt, one of the parte having a recess in its under face within which the companion part is fitted, said recess providing a circnmscribing iiange which v extends to the object to be secured, the part 70 fitted in said recess havin? a circumferential i groove, and a pin bedderlin said liange and engaging in said groove to couple the parts j permanently together and permit relative. rotation thereof. \7 5 6." A locking block for co-opera-tion with a stem' comprising two co-aXial (2o-operating parts relatively rotatable and having central openings through which the stem projects, one of 'the parts being noiwotatable with 8? respect to the stem, the other part and the stem being formed mutually to engage againstV relative endwise movement., a, locking bolt for connecting said parts against relative rotation in the relative positions 55 thereof wherein the stem is engaged Yby'said one part against endwise movement,'andl lock mechanism carried by one part and operative to retract the bolt, one of the parte having aprojecting tlange which surrounds' 90 the stem and for which. the object to be se cured has -a recess, said flange thereby preventing access to the stem at a point' be tween said object and the block.

75 A locking block for cooperation with 95 a stem and having a central opening through which the stem projects and means tor locking the block against endwise movement on the stem, the block having a projecting flange which surrounds the stem and for which f the object to be secured has a recess, said iange thereby preventing access to the stem at a point between said object and the block.

8. A locking block for co-operation with a stem'comprising two coaxial cooperating 10! 'parts relatively rotatable' and having central openings through which the stem project, one ot the parts being non-rotatable with respect to the stem, the other partv and the stem being formed mutually to engage l1( against cndwise movement, a locking hlt carried by said part engaging thev stem against endwise movement and movable in the direction of the axis of said part, said bolt connecting said parts against relative 1li' rotation in the relative positions thereof wherein the stem is 'engaged by said one part against endwise movement, and lock mechanism also carried by said part engaging the stem against endwise movement. and 12( operative to retract said bolt.

9; A locking block for co-operation with a stem comprising two co-axial cooperating parts relatively rotatable and having central openings through which the. stem projects, 125 one of the parts being non-rotatable with respect to the stem, the other part and the stem being formed mutually to engage against jndwise movement, a locking bolt carried bysaid part engaging the stem 136 against end\vi" movement.- andmovable in the direction oi the axis oi said part, said bolt connecting said parts against relative rotation in the relative positions thereof wherein the stem is engaged by said one part against endvvise movement, and lock mechanism also carried b v said part engaging the stem against' endwise movement and operative to retract said bolt, the part which carries saidbolt and lock mechanism having a recess in its under acev'ithin which the companion part is' rotatabie vvith respect to the stem, the other` part and the stem being formed mutually to engage against endwise movement, a locking bolt carried by said part engaging the stem against endwise movement and movable in the direction ot the axis of said part, said bolt connecting said parts against relative rotation in the relative positions thereof wherein the stem is engaged by said one part against endivise movement, lock mechanism also carried by said part engaging the stein against endvvise movement and operative to retract said bolt, the part which carries said bolt and lock mechanism having a recess in its under face Within which the companion lpart is fitted, said recess providing a circumscribing flange which extends to the object to be secured,'the part fitted in A said recess having a circumferential groove,

and a pin bedded in said iange and engaging in said groove to couple the parts permanently together and permit relative rotation thereof.

1l. locking block -for co-operation with a stem comprising two co-axial co-opcratingparts relatively rotatable and having central openings through which the stem projects, one of the parts being non-rotatable with respect to the stem, the other part and the stem being formed mutually to engage against cndwise movement, al looking bolt carried by said part engaging the stem against endwise movement and movable in the direction ot the axis of said part, said bolt connecting said parts against relative rotation in the relative positions thereof -vvherein the stein is engaged by said one part against endvvise movement, and lock mechanism also carried by said part engag- :manna ing,r the stem against endwise movement and operative to retract said bolt, the nonrotatable. part havinga projecting flange which surrounds the stem and for which the object to he secured has a recess, said flange thereby prcva-fnting access to the stem al a point between said object and the block.

1Q. A locking block :tor (co-operation with a sten: and having a central opening through which the stem projects, said block having a holt by which it may he liked against movement on the stem, lock mechanism for operating said holt, said block having an opening through which said mechanism is exposed to provide for the insertion of a l-ey, and a band encircling and rotatably `fitted on said block and normally closing said G`opening, thereby to provide a dust guard for said mechanism, said band being formed to `runcover said opening upon movement to a del initeposition.

.31 ln a tire lock, the combination with a tire valve stein, oi' a tubular body having a Hat sided bore adapted .to engage the flat side ot a valve stem, a member rotatable on the body and having a screw-threaded engagement with the valve stem, and manuall'v releasable means for positively locking said rotatable member against rotation.

14. In a valve stem tire lock, a substantially tubular member adapted to be positioned on a valve stem, means on said tubular member for holding it against rotation on said stem, and means rotatable to occupy one position in which it is adapted t( lie contiguous to the flat sides ot said valve stem to permit removal of the member, and another position in which it is adapted to engage the threads of the valve stem for locking the member against removal.

l5. ln a valve stem tire lock, a substantially tubular member adapted to be positioned on a valve stem, means on said tubular member1 for holding it against rotation on said stem, means rotatable to occupy one position in which it is adapted to lie contiguous to the flat sides ot' said valve stem to permit removal oi the member, and another position in which it is adapted to engage the. threads of thc valve stein for locking the member against removal, and means for locking the rotatable means in the second mentioned position.

In testimony whereof we aiix our signatures.

ROBERT H. BUTTERS. RICHARD W. STARKE. 

